The Wurlitzer 200A (OpenWurli) is a physical model of the Wurlitzer 200A electric piano with 64-voice polyphony, tremolo, speaker character modeling, velocity curves, and 2x oversampling.
(from GitHub - reales/retromulator: A DAW plugin (AAX / VST3 / AU) that emulates classic hardware synthesizers by running their original firmware on cycle-accurate CPU and DSP emulators · GitHub)
would be possible to have OpenWurli in Zynthian?
Cool instrument. Besides there is source code available, it seems to support only CLAP and VST as plugin standard. We need LV2.
I also cannot say if a RPi4/5 CPU is powerful enough for this. So, without any effort to get this expanded as LV2 plugin it may be difficult to get it up and running.
If you need a very good Wurli, I bought the electric pianos pack for Pianoteq. Get that on a Pi5-based Zynth and you’re set, though of course, not for free. I have no idea how they compare, qualitywise, but I have no complaints about Pianoteq. Indeed, I believe you could run it on a 1GB Pi5, or a 2GB at most, if that’s all you need.